Rojek KTP automatic boilers  are a combination of the gasification boilers in the KTP range with a Ferroli Sun 7 pellet burner .   The original design of the boiler fireplace uses double combustion , enabling high combustion efficiences , practically complete combustion and minimum emissions. It is not necessary to burn seasoned wood in this range of boilers , although fuel efficiency and boiler output do decrease when using wood with a higher moisture content. The Ferroli SUN P7 burner requires high quality white wooden pellets and comply with Class 3 in accordance with the Norm 303 -5. The pellet burner can be mounted with the door opening to either side depending upon the location of the fuel tank. With a fuel tank , electronic regulation and the worm feeder the boiler is able to work for several days in automatic operation. The combi boilers are available in 20kW , 25kW and 30kW models.   swansolar.eu © Swan Solutions de Propriete 2012